Serial Converters, Isolators and Repeaters

To keep your serial equipment communicating and smoothly integrated with new technologies, B B SmartWorx has developed the most extensive line of serial conversion and isolation products on the market. Built to handle the most demanding environments, our serial products are both rugged and reliable.

Model BB-232MSS2, RS-232 4-Port Mini-Smart Switch/Port Combiner, allows one RS-232 host device to connect to up to four RS-232 devices. Model BB-232MSS2 can function as a software and/or hardware controlled switch.
There are four LEDs that indicate which port is connected to the master port. The master port can be configured as a DTE or DCE port by an internal switch setting (see datasheet). If the master port is configured as a DTE port, the four slave ports automatically become DCE ports. Handshake lines DSR and DTR are connected together and are not passed through to the master port. There is no delay through the device and data is not buffered. The communication format is set via dipswitch 1 (SW1 - see datasheet).
NOTE: The data format and rates mentioned are used to switch Model BB-232MSS2. Communication between the devices can use any format or data rate.
NOTE: Power supply required, not included, sold separately.

Model 232UDS, universal serial data splitter, can be connected so that any two RS-232 devices can connect to any one RS-232 device. For example, two computers can share the same modem or serial printer at the same time and each can remain connected at all times. The other pins must be programmed for proper direction of data flow.
Model 232UDS can function as either an modem data splitter or a printer data splitter. It allows you to switch select which lines are OR’d together and which lines are passed straight through. This unit is self-powered from the RS-232 line and can be left permanently installed.

Which RS-232 data lines are active? Find out with this RS-232 mini tester. It makes troubleshooting easy by helping to check interface connections, equipment, cable problems or failures.
Model 9PMTT RS-232 mini tester is designed to connect with any RS-232 interface. The tester may be left in the line permanently. It is transparent to data transfer. Bright red or green LED signals clearly show which lines are active. The LEDs’ color indicates Negative or Positive voltage (red meaning Negative; green meaning Positive).

Monitor and control multiple scales, scanners, terminals or other serial devices with a single PC. Economizes systems by connecting a PC port to several data sources – ideal for devices requiring only intermittent access. The first device to send captures the data path, locking out other lines.
Data flow may also be software controlled using the RTS line. Data from the host PC is sent to all attached devices. Port combiners can be cascaded by connecting the master port of each successive unit to one of the slave ports of the preceding unit. Each additional port combiner adds one slave port to the system. Model 232PTC9 requires an external 12 VDC @ 100 mA power supply (sold separately).

Model 232MDS can be connected so two computers or terminals can use one modem without switching. This modem data splitter can combine two 25-pin DTE ports and connect them to a 25-pin DCE port.
With B B SmartWorx’ serial port splitter you gain reliability by capturing data from one peripheral on redundant PCs. This serial RS-232 splitter can improve a system’s economy by sharing multiple PCs on a single peripheral.

Model 9PMDS connects two computers or terminals to one modem without switching. The splitter can combine two 9-pin DTE ports to one 9-pin DCE port.
With B B SmartWorx’ serial port splitter you gain reliability by capturing data from one peripheral on redundant PCs. This serial RS-232 splitter can improve a system’s economy by sharing multiple PCs on a single peripheral.

The 232LB9R is a 9-pin RS-232 repeater that re-transmits all 8 signals and carries the ground line through. Many computers, laptops and some desktops ship with low-power versions of RS-232 ports that are unable to drive port-powered devices or full-length RS-232 cabling. The 232LB9R can amplify these weak signals up to the RS-232 Standard for uses such as running port powered devices. It is also ideal for extending full-powered RS-232 cable runs beyond the typical 15 to 30 meters (50 to 100 feet) distance. An external power supply is required (not included, sold separately).

Model 232DRIO provides a low-cost, easy to use solution for RS-232 serial port to discrete relay output applications. It offers one optically isolated input and two relay outputs. The General Purpose Control Module can be used to sense external ON/OFF conditions and to control a variety of devices. The 232DRIO includes a CD ROM with an instruction manual and demonstration programs written in QuickBASIC and C/C .

Intelligent and versatile, Model 232BSS4 serial data switch provides communication to four devices from one serial port. Each port contains a dedicated UART and an 8K byte Transmit and Receive buffer, allowing each port’s data rate, data format, and protocol to be configured independently. The Master port can send and receive data from one Slave port while the other Slave ports continue to buffer data. The Master can also broadcast the same message to two or more Slave ports at once.
The switch can also be configured to send data automatically to the Master port from each of the Slave ports when data is present with an optional preamble identifying the port. It can also provide two-way communications between the Master port and one Slave port at a time. Switching and control is accomplished through user defined three or four character command strings. These control sequences are stripped from the data stream, making the switch transparent to the Slave devices.
Switches can be cascaded to expand the 232BSS4 to more than four ports. Two units can also be used back-to-back to provide automatic connection between devices over a single data channel. LEDs indicate when the unit is powered up and which port is selected to send data to the Master port. Setup software is provided on the included CD and is compatible with Windows 98, ME, 2000, XP, and Vista. A 12VDC power supply with a 2.5mm (positive tip) phone jack is required (not included, sold separately).
The Master port is a DB25 female connector configured as DCE. This provides a direct connection to an IBM PC compatible or other DTE device. When connecting the Master port to a modem, the Master port of another 232BSS4, or other device configured as DCE, a null modem adapter is required.
Slave ports are DB9 male connectors configured as DTE for direct connection to a modem or other DCE device. When connecting the Slave ports to a PC compatible or other DTE device, a null modem adapter is required.
Data Format: 7 or 8 Data bits, Even, Odd, or No Parity (Master does not support 7 Data bits with no parity), 1 Stop bit (fixed).

Tap in on a serial data stream and transparently feed another monitor, printer or other device.
Model 9PCDT allows an RS-232 port to tap into and check data being transmitted between two other RS-232 ports. DIP switches set programming to monitor the main Transmit and Receive lines individually or together. Choose between monitoring the DCE or DTE port. Also allows the monitoring port to be either DTE or DCE. The DTE connector is male, and DCE and TAP connectors are female.

Tap in on a serial data stream and transparently feed another monitor, printer or other device.
Model 232CDT has DIP switches that allow you to monitor the main Transmit and Receive lines individually or together. The male RS-232 connector on the top and the female RS-232 connector on the bottom are connected straight through, pin for pin. These connectors are used to connect the device – in series – with the RS-232 line to be tapped.

Device connectivity is made easy and reliable with PCI serial port cards. Control or access data with fast, cost-effective communications from a variety of serial devices. PCI serial cards are ideal for industrial and time-sensitive applications including automotive diagnostics, HVAC, point-of-sale, court reporting, security and SCADA.

Model DSLP-PCIE-100, low-profile RS-232 serial PCI Express Card, meets PCI Express Base Specifications V1.1. It can be installed in virtually any available PC system and is compatible with all major operating systems. Users do not need to set jumpers to configure I/O addresses and IRQ locations.
The board also supports 5VDC or 12VDC of power from each serial port pins 1, 4, 8 or 9. This can be configured via jumpers on the board. If this power is not required, then normal control signals are available. The default configuration is with the jumpers set to disable the power on these pins.

The PCIE-1680 is a special purpose communication card that offers connectivity to Controller Area Networks (CAN) on your PC. With its built-in CAN controllers, the PCIE-1680 provides bus arbitration and error detection with an automatic transmission repetition. This drastically reduces the chance of data loss and ensures system reliability.You can run both CAN controllers independently at the same time. The PCIE-1680 operates at baud rates up to 1 Mbps.

PCI-1680U is a special purpose communication card that offers the connectivity of the Controller Area Network (CAN) to your PC. With its built-in CAN controllers, the PCI-1680U provides bus arbitration and error detection with an automatic transmission repeat function. This drastically reduces the chance of data loss and ensures system reliability. The on-board CAN controllers are located at different positions in the memory, and you can run both CAN controllers independently at the same time. Besides, PCI-1680U has a universal PCI connector, which is compatible with both new 3.3 V signaling systems and traditional 5 V signaling systems. With high-compatibility, the PCI-1680U can be used in diverse systems.

The PCI-1671UP IEEE-488 interface converts any PCI bus personal computer into an instrumentation control and data acquisition system. Connect up to 14 instruments using standard IEEE-488 cables such as the PCL-10488-2, 2 meter IEEE-488 interface cable. The PCI-1671UP transfers data over the GPIB at rates in excess of 1.5 million bytes per second using the maximum IEEE-488 specification cable length (2 meters times the # of devices). A 1,024-word FIFO buffer and the advanced REP-INSW ISR data transfer method provide the horsepower required to then transfer the data between the GPIB board and the host computer. The high-speed state machine also provides byte-to-word packing and unpacking, and because words carry twice the information that bytes do, packed data requires fewer bus cycles to transfer the same GPIB information.&lt;BR&gt;The PCI-1671UP adheres to ANSI/IEEE Standard 488-1978. Often referred to as the IEEE-488.2 bus, GPIB bus or HP-IB bus, the GPIB (General Purpose Interface Bus) is a standard for instrumentation communication and control for instruments from manufacturers the world over. The GPIB provides handshaking and interface communications over an 8-bit data bus employing 5 control and 3 handshake signals. Equipped with PCI-1671UP, a personal computer can control GPIB instruments, gather data from GPIB test equipment, or become a data acquisition station in a GPIB system.

The PCI-1604L is an 2-port RS-232 and compatible with the PCI 2.2 bus specification, The card provides 1 KV EFT protection , 8KV ESD protection and have many functions such as high transmission speed of 921.6 kbps; The card can work under a tough environment with -20 ~ 60°C operating temperature. PCI-1604L is an economical communication card for users who need to control several RS-232 devices.

These RS-232/422/485 PCI communication cards are compatible with the PCI 2.2 bus specification for universal connectivity and low-profile PCI cards. The PCI-1604UP provides two independent RS-232 ports, while the PCI-1602UP has two RS-232/422/485 ports. To improve system performance, all cards allow transmission rates up to 921.6 kbps. To increase reliability, the cards offer EFT protection, protecting your system from abrupt high voltages up to 2,500 VDC. High-performance OXuPC1952 and OXuPC1954 UARTs with 128-byte FIFO, reduces the CPU load, making the cards especially suitable for multitasking environments.
The cards follow the Low Profile PCI MD1 standard. This standard has the same protocol and electronic definition as standard PCI, but the low-profile PCI standard is smaller. Thus, the cards are suitable for embedded systems, and size-constrained environments. Moreover, all cards are equipped with an universal PCI connector, which allows support for traditional systems with 5 V signaling or newer systems with 3.3 V signaling.

As many banking, retail, and hospitality POS applications are implemented using increasingly smaller-size systems, it becomes more difficult to integrate the multiple serial ports necessary to accommodate the large number of peripherals required for these systems. This low profile PCI serial board solves this problem.
Low profile PCI boards are mechanically similar to standard PCI boards, but use a shorter board and a different mounting bracket. This product leverages the standard to provide two additional serial ports on a single board. These low profile PCI boards adhere strictly to standard specifications, so you can be sure that every board will install smoothly and consistently, and function properly in your system.

This ready-to-use serial cable features molded connectors and gold plated contacts for superior corrosion resistance to ensure solid connections for the life of the cable. Suitable for connecting 25-pin serial devices to laptops, computers and expansion/interface cards.

Which RS-232 data lines are active? Find out with this RS-232 mini tester. It makes troubleshooting easy by helping to check interface connections, equipment, cable problems or failures.
Model 9PMTT RS-232 mini tester is designed to connect with any RS-232 interface. The tester may be left in the line permanently. It is transparent to data transfer. Bright red or green LED signals clearly show which lines are active. The LEDs’ color indicates Negative or Positive voltage (red meaning Negative; green meaning Positive).

Make wiring in an industrial cabinet easy with this DB9 female to terminal block adapter. Connections can be made quickly without any special tools. Install it once - then you can replace components error-free with a simple unplug/re-plug, rather than tediously unfastening and refastening numerous wires individually to terminal blocks. Its compact size and DIN rail mountability is perfect for wiring areas with limited space.
Each pin on the DB connector has a corresponding terminal block that is marked. In addition, an extra terminal block is provided that connects to the shield of the DB connector (used for grounding purposes). DB connector accepts industrial standard 4-40 locking screws.

Make wiring in an industrial cabinet easy with this DB9 male to terminal block adapter. Connections can be made quickly without any special tools. Install it once - then you can replace components error-free with a simple unplug/re-plug, rather than tediously unfastening and refastening numerous wires individually to terminal blocks. Its compact size and DIN rail mountability is perfect for wiring areas with limited space.
Each pin on the DB connector has a corresponding terminal block that is marked. In addition, an extra terminal block is provided that connects to the shield of the DB connector (used for grounding purposes). DB connector accepts industrial standard 4-40 locking screws.

Make wiring in an industrial cabinet easy with this DB25 female to terminal block adapter. Connections can be made quickly without any special tools. Install it once - then you can replace components error-free with a simple unplug/re-plug, rather than tediously unfastening and refastening numerous wires individually to terminal blocks. Its compact size and DIN rail mountability is perfect for wiring areas with limited space.
Each pin on the DB connector has a corresponding terminal block that is marked. In addition, an extra terminal block is provided that connects to the shield of the DB connector (used for grounding purposes). DB connector accepts industrial standard 4-40 locking screws.

Make wiring in an industrial cabinet easy with this DB9 female to terminal block adapter. Connections can be made quickly without special tools. Install it once - then you can replace components error-free with a simple unplug/re-plug, rather than tediously unfastening and refastening numerous wires individually to terminal blocks. Its compact size and DIN rail mountability is perfect for wiring areas with limited space.
Each pin on the DB connector has a corresponding terminal block that is marked. In addition, an extra terminal block is provided that connects to the shield of the DB connector (used for grounding purposes). DB connector accepts industrial standard 4-40 locking screws.

Make wiring in an industrial cabinet easy with this DB9 male to terminal block adapter. Connections can be made quickly without special tools. Install it once - then you can replace components error-free with a simple unplug/re-plug, rather than tediously unfastening and refastening numerous wires individually to terminal blocks. Its compact size and DIN rail mountability is perfect for wiring areas with limited space.
Each pin on the DB connector has a corresponding terminal block that is marked. In addition, an extra terminal block is provided that connects to the shield of the DB connector (used for grounding purposes). DB connector accepts industrial standard 4-40 locking screws.

Model MMNM9, RS-232 null modem adapter, can be used to connect two DTEs (computer, terminal, printer etc.) directly using a RS-232 serial cable. The original RS-232 standard only defined the connection of DTEs with DCEs (i.e. modems).
With a null modem adapter, the Transmit and Receive lines are cross-linked. Depending on the purpose, one or more handshake lines are cross-linked. Several wiring layouts are in use because the null modem connection is not covered by a standard. B B SmartWorx’ Null Modem adapter comes with a variety of connector options and pin outs to cover most common applications.

Our industrial RS-232 to RS-422 and RS-485 converters are ideally suited for the industrial automation market and other “control panel” applications. Some offer triple isolation and hardened Class 1 Division 2 certification for use in hazardous locations and temperature extremes.

Model 485CON, RS-232 to RS-485 converter, converts unbalanced, full-duplex RS-232 signals to balanced, full-duplex or half-duplex RS-485 signals. RS-485 is an enhanced version of the RS-422 balanced line standard. It allows multiple drivers and receivers on a two-wire system.
The RS-232 port uses a male DB-25P type of connector with pins 2 (TD input) and 3 (RD output) supported. Protective Ground (pin 1) and Signal Ground (pin 7) are also connected. The RS-485 port uses a female DB-25S type of connector with Send Data outputs on pins 2 and 14, and Receive Data inputs on pins 5 and 17. Protective Ground (pin 1) and Signal Ground (pin 7) are connected through to the RS-232 connector.
The polarity of the two RS-485 lines must be correct. With no data being sent, the RS-232 line should be negative and the RS-485 "A" terminal should be negative with respect to the "B" terminal. If your equipment uses a " " and "-" naming scheme, in most cases the "A" line will be connected to the "-" and the "B" line will be connected to the " ". The RS-485 driver must be enabled when checking the polarity of the output of a RS-485 driver. On this connector, the RTS input (pin 4), on the RS-232 side must be raised to enable the RS-485 driver.
Figure 1 shows how to interconnect two RS-485 converters using two signal wires. The resistors Rt are optional, depending on the line length, baud rate, etc. The resistors should be about the impedance of the line used, which is normally about 120 Ohms each. Termination resistors are installed only at each end of the RS-485 multi-drop network. RTS must be off (low or marking) to receive and on (high or spacing) to transmit. Both RTS’s should not be on at the same time. Although you will not damage anything, the data sent will be garbled. If both RTS lines are off, the line may be floating and random data may appear on the outputs. Your protocol should allow for this if it can happen.
Up to 32 receivers can be driven by any one generator. This allows you to put together large systems with many drop points. The termination resistors should be located at approximately opposite ends of the system.
An external power supply is required (not included, sold separately).

Model BB-BB-CANFB isolates and protects your CAN (Control Area Network) system from component killing surges and transients in noisy and harsh environments. Model BB-CANFB is a copper-to-fiber, fiber-to-copper converter that provides optical isolation for CAN systems. It separates and protects critical segments of the system from the rest of the CAN network. It is protocol independent, allowing it to work with different CAN protocols and frame lengths. Model BB-CANFB converter is used in pairs, one for each side of the fiber.
The CAN side is connected to the system via terminal blocks. Fiber is connected via ST connectors (multi-mode). Model BB-CANFB is housed in a rugged DIN rail mountable box, making it easy to install in industrial cabinets. A 10-30 VDC power source is required (not included, sold separately).
According to the CAN specification, the CAN network must be terminated at both ends. Networks not properly terminated may have data errors or miss the data completely. Model BB-CANFB creates two new ends on the CAN network. Space is provided on the board for a termination resistor, R8. A 120 Ohm resistor is recommended for termination. If the BB-CANFB is not at the end of the network, it should not be terminated.
Model BB-CANFB is bit-wise enabled, allowing it to automatically adjust for different baud rates. Bit-wise enable only enables the driver on every low bit received. It also disables the driver on the receive side for the low bit plus a maximum of 2µ sec. This prevents data from echoing back from the BB-CANFB, but allows the nodes to respond back. The maximum fiber length used depends on the baud rate, the BB-CANFB, and length of copper wire used. The CAN bus requires a response in one bit time.

Model 485LP9TB is a port-powered, two-channel converter. It converts TD and RD RS-232 lines to balanced RS-485 signals. The unit can be powered from the RS-232 handshake lines, DTR and RTS. If port-powering the unit, one of these handshake lines must be asserted (high) in order to power the unit (See Table 1). DTR must be asserted to receive data. The RS-485 driver is enabled when RTS is asserted and disabled when RTS is disasserted. The RS-485 receiver is disabled when the driver is enabled and is enabled when the driver is disabled.
To maximize the amount of power available to the RS-485 driver, the RS-232 handshake lines are not looped back (tied together). As a result, the following handshake lines will appear as disasserted (low): CTS, DCD, and DSR. Care should be taken to ensure that any software being used does not require any of these handshake lines be asserted. If existing software requires any of the handshake lines to be asserted, you can loop back the required handshake lines in your cable.
An external power supply may be used to power the converter (not included, sold separately).

Model 422LP9R is a port-powered two-channel RS-232 to RS-422 converter. It converts TD and RD RS-232 lines to balanced RS-422 signals. The unit is powered from the RS-232 handshake lines DTR and RTS. One of these handshake lines must be asserted (high) in order to power the unit.

Model BB-485CSP2 converts unbalanced RS-232 signals to balanced, full or half-duplex RS-485 signals. It also provides transient surge protection and fast acting fuses on the RS-485 data lines. RS-485 is an enhanced version of the RS-422 Standard allowing multiple drivers and receivers on a two-wire system.
The RS-232 port has a female DB-25 connector with pins 2 (TD), 3 (RD), and 7 (Signal Ground) supported. Pins 4 (RTS) and 5 (CTS) are tied together, and pins 6 (DSR), 8 (CD), and 20 (DTR) are also tied together. Pins 1 (Frame Ground) and 7 (Signal Ground) are connected straight through to the RS-485 terminal blocks. The 485CSP2 has two LEDs, a Transmit Enable LED to show when the RS-485 driver is enabled, and a Receive Data LED showing data appearing at pin 3 of the RS-232 port. These are very useful for determining if data is getting through the converter. Note that the Transmit Enable LED indicates only that the 485 driver is enabled, data must be present on pin 2 of the 232 side for data to be transmitted out of the 485 side. If no data is present, no data will be transmitted even though the Transmit Enable LED is illuminated. The RS-485 terminal blocks support Transmit Data (A) and (B), Receive Data (A) and (B), Frame Ground, Signal Ground, and 12 VDC input. A 12 VDC external power supply is required(not included, sold separately).
For the protection properties on Model BB-485CSP2 to work, the Frame Ground terminal block or pin 1 on the RS-232 side must be connected directly to a good frame (chassis, green wire, or earth) ground. This must be a low impedance connection for Model BB-485CSP2 to be effective.

Model BB-485PTBR converts unbalanced RS-232 signals to balanced, full or half-duplex RS-485 signals. RS-485 is an enhanced version of the RS-422 Standard allowing multiple drivers and receivers on a two-wire system. The RS-232 port has a female DB9 connector with pins 2(RD), 3(TD), and 5(SG) supported. Pins 7(RTS) and 8(CTS) are tied together. Also pins 6(DSR), 1(CD), and 4(DTR) are tied together, but not passed through the converter. The RS-485 port has an 8-position pluggable terminal block connector. Model BB-485PTBR supports baud rates from 300 to 115.2K.
12VDC power supply required (not included, sold separately).

The ADAM-4521 is an intelligent RS-422/485 to RS-232 converter specifically designed to connect RS-422/485 devices to an RS-232 network. RS-232 is the most common transmission standard. Although widely available on most computer systems, measurement equipment, PLCs, and industrial devices, its transmission speed, communication distance, and especially networking capability are limited due to unbalanced transmission. The ADAM-4521 addressable converter solves this problem and lets you easily build up an RS-485 network with your RS-232 devices by assigning each one an address for easier communication.

The ADAM-4520I (RS-232 to RS-422/485 converter) is designed more rugged than previous models which have wider operating and storage temperatures, can accept a wider power input, and have excellent anti-noise design. Moreover,it provide ssignal isolation (3,000VDC) protection and power surge (50V) protection. These industrial-grade features ensure robust and reliable operation in harsh environment applications.

Most industrial computer systems come with standard RS-232 serial ports. Though widely accepted, RS-232 has limited transmission speed, range, and networking capabilities. The RS-422 and RS-485 standards overcome these limitations by using differential voltage lines for data and control signals. The ADAM-4520/4522 converter lets you take advantage of RS-422 and RS-485 on systems originally equipped with RS-232. It transparently converts RS-232 signals into isolated RS-422 or RS-485 signals. You do not need to change your PC&#39;s hardware or your software. The ADAM-4520 lets you easily build an industrial grade, long distance communication system with standard PC hardware. It extends the communication distance by 4000 ft. (1200 m) or increases the maximum number of connected nodes by 32.

Model 422CFCR, 4-channel RS-232 to RS-422 converter, converts unbalanced RS-232 signals to balanced RS-422 signals at data rates of 115.2 kbps. The RS-422 Standard uses a balanced voltage digital interface to allow communications of 90K bits per second on cable lengths of 1200 meters (4000 feet). If this baud rate is exceeded the line length will decrease accordingly. Ten receivers can be connected to any one driver for use in multi-drop systems.

Model 4WSD9TB, a universal serial converter, provides RS-232 to RS-422/RS-485 conversion using either port-power or an external power supply.
Data is converted in both directions. RS-232 Transmit Data is converted to balanced RS-422 or RS-485 Transmit Data. Received RS-422/485 signals are converted to RS-232.
The RS-232 port is a DB9 female connector (DCE) with pins 2(RD), 3(TD), and 5(Signal Ground) supported. Pins 7(RTS) and 8(CTS) are tied together. Pins 6(DSR), 1(DCD), and 4(DTR) are also tied together.
Model 4WSD9TB has a terminal block RS-485 connector.
Automatic Send Data Control - Unlike converters that require programming hardware handshaking signals to control RS-422 or RS-485 operation, Model 4WSD9TB provides automatic Send Data Control. No handshaking is required to control the RS-422/485 driver. Operating mode is set via a dipswitch.
In RS-485 mode, the RS-485 driver is enabled by special circuitry which senses the RS-232 TD input. In half-duplex RS-485 mode, the receiver is enabled when not transmitting. For full-duplex operation, the receiver is set as always enabled.
In RS-422 mode, the transmitter and receiver are always enabled.
Port Power via RS-232 - Incoming RS-232 data lines in either the high or low state are used to port power the converter. If two RS-232 output handshake lines are available and the cable run is short, no external power is needed. The more handshake lines available, the more likely the unit can be port powered. If the handshake lines are raised and no termination is used, power efficiency is greatly increased.
External Power Supply - Less than 3 mA is required to operate the converter - plus the load current. If not enough power is available from the RS-232 port, or not enough handshake lines are available, or a larger load current is required, the converter may be powered by an external 12 VDC power supply with a 2.5mm plug (tip positive). A DC jack on the converter supports external power. (Power supply not included, sold separately.)

Model 4WSD9R, a universal serial converter, provides RS-232 to RS-422/RS-485 conversion using either port-power or an external power supply.
Data is converted in both directions. RS-232 Transmit Data is converted to balanced RS-422 or RS-485 Transmit Data. Received RS-422/485 signals are converted to RS-232.
The RS-232 port is a DB9 female connector (DCE) with pins 2(RD), 3(TD), and 5(Signal Ground) supported. Pins 7(RTS) and 8(CTS) are tied together. Pins 6(DSR), 1(DCD), and 4(DTR) are also tied together.
Model 4WSD9R has a DB9 female RS-485 connector.
Automatic Send Data Control - Unlike converters that require programming hardware handshaking signals to control RS-422 or RS-485 operation, Model 4WSD9R provides automatic Send Data Control. No handshaking is required to control the RS-422/485 driver. Operating mode is set via a dipswitch.
In RS-485 mode, the RS-485 driver is enabled by special circuitry which senses the RS-232 TD input. In half-duplex RS-485 mode, the receiver is enabled when not transmitting. For full-duplex operation, the receiver is set as always enabled.
In RS-422 mode, the transmitter and receiver are always enabled.
Port Power via RS-232 - Incoming RS-232 data lines in either the high or low state are used to port power the converter. If two RS-232 output handshake lines are available and the cable run is short, no external power is needed. The more handshake lines available, the more likely the unit can be port powered. If the handshake lines are raised and no termination is used, power efficiency is greatly increased.
External Power Supply - Less than 3 mA is required to operate the converter - plus the load current. If not enough power is available from the RS-232 port, or not enough handshake lines are available, or a larger load current is required, the converter may be powered by an external 12 VDC power supply with a 2.5mm plug (tip positive). A DC jack on the converter supports external power. (Power supply not included, sold separately.)

Put legacy equipment with incompatible communications standards back into service. Many older or proprietary system devices lack the option to reconfigure baud rates, data formats, and handshaking.
Model 232BRC acts as a translator between asynchronous devices, matching each device’s needs while maintaining the highest possible throughput. Each side can be individually configured to suit the device connected to it.
Model 232BRC supports data rates up to 115.2 kbps and all standard data formats. Each side can either supply or accept hardware or software handshaking, allowing the higher speed device to be located on either port. The included PC setup software walks the user through all possible options. Once configured by a PC, the module may be installed on any system. Non-volatile memory maintains the parameters when power is removed. A detailed instruction manual and software is provided on the included CD ROM. A 12VDC power supply is required (not included, sold separately).

Model 232OTTL converts RS-232 signals to 0-5 VDC TTL ("Transistor-Transistor Logic") levels. The 232OTTL provides 1500V optical isolation. Two channels are used to convert from RS-232 to TTL signals and two channels are used to convert from TTL signals to RS-232.
These converters support RD, TD, RTS, and CTS. The RS-232 side is a DB25P male connector (DCE). The TTL side is a DB25S female connector. The 232OTTL supports up to 38.4K baud.
It is important that only TTL logic (0 to 5V) is used for the TTL side of the converter. The maximum sinking current for one TTL output is 8 mA. The maximum source current for one TTL is 0.8 mA. Signal levels are inverted by the converter in its standard configuration as shown in Table 1.
Model 232OTTL has the option for non-inverted outputs - see Table 2, "Operations Requiring Modification" if non-inverted outputs are desired.
Port power is derived from the outputs of the host RS-232 port. TD, RTS, and DTR lines may be used to port power the RS-232 side. A minimum of two of these lines in either high or low states is required for proper operation. To externally power the RS-232 side, connect the positive lead of the 12VDC power supply to pin 25 and the GND lead to pin 12 of the DB25 female connector.Model 232OTTL requires both port power on the RS-232 side, and an external 12VDC power supply connected either through 2.5mm jack or pins 12 (GND) and 25 ( 12VDC) on the TTL side.

Model SCP211T-DFTB3 serial converter is compact and rugged, designed and tested to meet heavy industrial EMC standards. The RS-232 signal is connected through a female DB9 connector. The RS-422/485 (2-wire and 4-wire) signal is connected through a removable terminal block, making wiring easy. Power is connected through a two-position, removable terminal block. A 10-30VDC external power source is required (not included, sold separately). Bit-wise enabled circuitry automatically detects the character time-out eliminating the need to set DIP switches for the baud rate.Model SCP211T-DFTB3 supports wide operating temperature range.This model can be used when isolation is not required, such as applications in which the data line does not exit the control cabinet.

Model SCP211-DFTB3 serial converter is compact and rugged, designed and tested to meet heavy industrial EMC standards. The RS-232 signal is connected through a female DB9 connector. The RS-422/485 (2-wire and 4-wire) signal is connected through a removable terminal block, making wiring easy. Power is connected through a two-position, removable terminal block. A 10-30VDC external power source is required (not included, sold separately). Bit-wise enabled circuitry automatically detects the character time-out eliminating the need to set DIP switches for the baud rate.
Model SCP211-DFTB3 is non-isolated and made for less demanding temperature extremes. This model can be used when isolation is not required, such as applications in which the data line does not exit the control cabinet.

Model FOSTCDRi-ST is designed with functionality required for heavier industrial environments. This industrial-grade isolated converter changes RS-232, RS-422, or RS-485 to single-mode fiber optics.
Model FOSTCDRi-ST extends serial data ranges up to 15 km (9 mi) and provides the most versatile connection possible between asynchronous full- or half-duplex serial equipment. In addition to direct point-to-point connectivity, it is capable operating in a multi-drop mode. This allows one serial device to communicate with up to 31 others around a fiber optic ring. Since it supports mixed serial standards, it can replace other converters and isolators and add the EMI/RFI immunity inherent to fiber optic communications. Fiber optic connection is single-mode ST.
Automatic Send Data Control circuit controls the RS-422/485 driver chip, eliminating the requirement for special software. Easy to install and configure, it has a 12-position DIP switch to set up the RS-422/485 parameters and removable terminal blocks to connect serial signals and power. In RS-232 mode, it supports Transmit Data and Receive Data. Handshaking signals are not passed through.

Model FOSTCDRi-SC is designed with functionality required for heavier industrial environments. This industrial-grade isolated converter changes RS-232, RS-422, or RS-485 to single-mode fiber optics.FOSTCDRi-SC extends serial data ranges up to 15 km (9 mi) and provides the most versatile connection possible between asynchronous full- or half-duplex serial equipment. In addition to direct point-to-point connectivity, it is capable operating in a multi-drop mode. This allows one serial device to communicate with up to 31 others around a fiber optic ring. Since it supports mixed serial standards, it can replace other converters and isolators and add the EMI/RFI immunity inherent to fiber optic communications. Fiber optic connection is single-mode SC.
Model
Automatic Send Data Control circuit controls the RS-422/485 driver chip, eliminating the requirement for special software. Easy to install and configure, it has a 12-position DIP switch to set up the RS-422/485 parameters and removable terminal blocks to connect serial signals and power. In RS-232 mode, it supports Transmit Data and Receive Data. Handshaking signals are not passed through.

Model FOSTCDRI-INV is a premium industrial serial to multi-mode fiber optic converter. Its rugged design is UL approved and certified for Class 1/Division 2 industrial environments. It extends data communications up to 4 km (2.5 miles). It provides three-way optical isolation on the input, output and power lines.
In addition to direct point-to-point connectivity, it is capable of operating in a multi-drop mode. This allows one serial device to communicate with up to 31 other devices around a fiber ring. Since it supports mixed standards, you can replace other converters and isolators and add the EMI / RFI protection inherent to fiber optic communications.
In RS-232 mode, the converter supports Transmit and Receive data. Handshaking signals are not passed through. An Automatic Send Data Control circuit controls the RS-422/485 driver chip, eliminating the requirement for external software.
Easy to install and configure, it has a 12-position DIP switch on the bottom to configure RS-422/485 parameters. Serial data and power cables connect to removable terminal blocks. ST connectors are used for the fiber.
A 10-30 VDC external power source is required (power supply not included, sold separately).
Model FOSTCDRI-INV features an "inverted fiber state" and is suitable for applications requiring the fiber optic transmit light to be Off in the idle state.

Model FOSTCDR-INV, serial to multimode fiber optic converter, is suitable for standard industrial installations. It extend data communications up to 4 km (2.5 mi) and provides two-way optical isolation on the input and output lines.
Model FOSTCDR-INV provides the most versatile connection possible between any asynchronous full- or half-duplex serial equipment. In addition to direct point-to-point connectivity, it is capable operating in multi-drop mode. This allows one serial device to communicate with up to 31 other devices around a fiber optic ring. Since the converter supports mixed serial standards, you can replace other converters and isolators and add the EMI/RFI immunity inherent to fiber optic communications.
An Automatic Send Data Control circuit controls the RS-422/485 driver chip, eliminating the requirement for special software. Easy to install and configure, it has an 8-position DIP switch to set up RS-422/485 parameters and terminal blocks to connect serial signals and power. In RS-232 mode, it supports Transmit and Receive data. Handshaking signals are not passed through.
A 10-30 VDC external power source is required (power supply is not included, sold separately).
Model FOSTCDR-INV features an "inverted fiber state" and is suitable for applications requiring the fiber optic light to be Off in the idle state.

Fiber optic cabling has inherent resistance to EMI/RFI and transient immunity, making it ideal for industrial and utility data communication applications.
Model FOSTC provides the most versatile connection possible between asynchronous serial equipment using fiber optic cable. Any two pieces of asynchronous serial equipment can communicate full- or half-duplex over two fibers at distances up to 4 km (2.5 mi). The converter can be used for point-to-point communications between serial devices. It can also be used to create a multi-drop master/slave configuration, allowing one serial device to talk to multiple slave devices around a fiber ring.
RS-232, RS-422 or RS-485 data signals are supported. Different standards can be mixed and matched to allow RS-232 devices to connect to RS-422 or RS-485 systems. This means Model FOSTC can replace converters and isolators when connecting remote devices, while providing the EMI/RFI and transient immunity of optical fiber.
Model FOSTC supports both Transmit Data and Receive Data lines, and provides full hardware control of the RS-485 driver with B B SmartWorx Automatic Send Data Control circuit. All serial connections are provided on the same DB25 female connector, while the multi-mode fiber is connected via two ST connectors. Powered by 12 VDC at 140 mA (maximum). An external power sourced is required (not included, sold separately).

Model 9PFLST allows any two pieces of RS-232 asynchronous serial equipment to communicate full-duplex over two multi-mode fibers. Typical distances up to 2.5 miles (4 km) are possible with no external power required. The 9PFLST supports both data signals at up to 115.2 kbps as well as the RTS/CTS handshake lines. This means the 9PFLST can replace short haul modems and isolators when connecting remote devices, while providing the EMI/RFI and transient immunity of optical fiber.
RS-232 connections are provided on the same DB9 female connector, while the multi-mode fiber is connected via two ST connectors. The unit is port powered by the RS-232 Transmit Data and handshake lines. When handshake lines are not available, or when using a low power RS-232 port, the 9PFLST can be powered by an external 12VDC supply, drawing 50 mA maximum.

This port-powered, two channel converter allows your computer to communicate longer distances by converting TD and RD RS-232 lines to RS-485 signals. RS-485 also provides multi-drop capability.
Model 485SD9RJ features Automatic Send Data Control which enables the driver when data is present on the RS-232 side. Control of the driver is automatic at speeds up to 115.2 kbps.
The converter is powered from the RS-232 data and handshake lines whether the lines are high or low. No handshake line change is necessary to control the data lines. The RS-485 driver is enabled with each bit of data. The RS-485 receiver is disabled when the driver is enabled and is enabled when the driver is disabled.
This converter is suitable for field service, where a power supply would add clutter, or anywhere you need compact, easy-to-use, economically priced serial conversion.

Model BB-485OI9TB, isolated converter, converts unbalanced, full-duplex RS-232 signals to balanced full-duplex (4-wire) RS-422/485 or half-duplex (2-wire) RS-485 signals.
The converter provides 1,500 Volts RMS optical isolation for data lines and ground (and connected devices) between the RS-232 and RS-422/485 signals. RS-232 port has a female DB9 connector. RS-422/485 port has a 6-position terminal block.
The RS-232 side of the converter draws power from the handshake lines (DTR, RTS). At least one handshake line must be asserted (raised high) to power the RS-232 side. The RS-422/485 side must be powered by an external 12 VDC power supply (not included, sold separately).

Model 485COSR, RS-232 to RS-485 converter, converts unbalanced, full-duplex RS-232 signals to balanced full-duplex (4-wire) or half-duplex (2-wire) RS-485 signals.
The RS-232 port has a female DB25S connector with pins 2 (TD input) and 3 (RD output) supported. Protective Ground (pin 1) and Signal Ground (pin 7) are also passed through. Pins 4 (RTS) and 5 (CTS) are tied together. Pins 6 (DSR), 8 (CD), and 20 (DTR) are tied together, but not passed through the converter.
The RS-485 port has a male DB25P connector with Send Data outputs on pins 2 and 14, and Receive Data inputs on pins 3 and 16, or 5 and 17. No special software requirements are needed since the RS-485 driver is enabled by the first transition on the RS-232 side of the Transmit Data line (Pin 2). Any transmission on the TD line keeps the RS-485 driver enabled by preventing the mono-stable multi-vibrator from timing out. The transmitter is disabled approximately 1 ms after the last transmitted character. This 1 ms timeout allows continuous transmission of data at 9600 baud or higher.
A 12 VDC external power supply is required (not included, sold separately).

Model 485CARLP9A is an RS-232 to RS-485 converter that allows you to connect your laptop PC to Carrier branded HVAC equipment.
Model 485CARLP9A is a port-powered, half-duplex RS-232 to RS-485 converter with send data control. The unit converts TD and RD RS-232 lines to balanced RS-485 signals and supports three-wire (Data A, B, and Signal Ground reference) RS-485 communications only.
The converter is powered from the RS-232 handshake lines, RTS, CTS and DTR, DSR, CD. The handshake lines are looped back on each other and can be in either state. No handshake change is necessary – no software is required to control the lines.
The RS-485 driver is enabled with each bit of data. The RS-485 receiver is disabled when the driver is enabled and enabled when the driver is disabled. This prevents data from being echoed back into the RS-232 device. The RS-232 side has a DB-9 female connector. The RS-485 side has a six-position RJ11 connector.
Note: Some names and words are trademarks of their respective owners. Carrier is a part of UTC Climate, Controls & Security, a unit of United Technologies Corporation ("UTC").

Three Versatile Powering Options
Model 485BAT3 features power versatility, making it perfect for field testing solutions. It can be powered in three ways: batteries, port powered, or external power supply (not included, sold separately).
Use the battery power option with a low power RS-232 port (found on many laptops) or no handshake lines or when it is inconvenient to use a power supply. Model 485BAT3 will draw as much power as possible from the RS-232 port and get any additional current necessary from the batteries.
If you have a full power-port and all your handshake lines, turn off
the battery switch. This allows you to run full port-powering and saves the batteries for emergencies. Note: The battery On/Off switch conserves battery life. It does not turn on and off all power to the unit.
Lastly, a stripped and tinned 12VDC external power supply may be used. Simply attach it to the terminal blocks and plug it in.
Model 485BAT3 converts unbalanced RS-232 signals to balanced RS-422 or RS-485 signals. RS-485 is an enhanced version of the RS-422 standard, allowing multiple drivers and receivers on a 2-wire system.

Model 422TTL converts RS-422 or EIA-530 signals to 5V TTL at data rates up to 115.2 kbps. Two channels are used to convert RS-422 to TTL and two channels are used to convert TTL to RS-422.
A DB25 male connector is used on the TTL side and a DB25 female connector is used on the RS-422/EIA-530 side. The converter supports RD, TD, RTS, and CTS. Pin 7 is signal ground for both connectors.
The converter supports baud rates up to 115.2 kbps. Open pads are provided for each line. If desired, you can change the pin connectors for any of the 4 channels. When converting a second RS-422 channel, use the corresponding RTS A and RTS B pins (refer to the Quick Start Guide).
The converter inverts the TTL signal. Refer to the specifications table to determine polarity. An external 12 VDC power supply is required (not included).

Model 422PP9TB is a port-powered, two-channel converter that changes TD and RD RS-232 lines to balanced RS-422 signals extending communication distances up to 1.2 km (4,000 ft.). Automatic Send Data Control feature enables the RS-422 driver when data is present on the RS-232 side. Control of the driver is automatic at rates up to 115.2 kbps. The RS-422 driver and receiver are always enabled.
With port-powering, a power supply is not required. Power comes from the DTR and RTS RS-232 handshake control lines. At least one handshake line must be present, in either the Positive or Negative voltage state. This permits use in applications without worrying about software control of the handshake lines.
The converter is configured to transmit data in both directions in an RS-232 and RS-422 system. The RS-232 pin-out connects directly to a computer’s COM port or any other DTE device. Model 422PP9TB connections to the RS-422 side are made via a terminal board. Model 422PP9TB can also be powered from an external source. This converter is ideal for field service or "in-line" cable applications.

Model 422PP9R is a port-powered, two-channel converter that changes TD and RD RS-232 lines to balanced RS-422 signals extending communication distances up to 1.2 km (4,000 ft.). Automatic Send Data Control feature enables the RS-422 driver when data is present on the RS-232 side. Control of the driver is automatic at rates up to 115.2 kbps. The RS-422 driver and receiver are always enabled.
With port-powering, a power supply is not required. Power comes from the DTR and RTS RS-232 handshake control lines. At least one handshake line must be present, in either the Positive or Negative voltage state. This permits use in applications without worrying about software control of the handshake lines.
The converter is configured to transmit data in both directions in an RS-232 and RS-422 system. The RS-232 pin-out connects directly to a computer’s COM port or any other DTE device. Model 422PP9R connections to the RS-422 side are made via a DB9 connector. This converter is ideal for field service or "in-line" cable applications.

Model 422LP25R, RS-232 to RS-422 converter, converts unbalanced RS-232 signals to balanced RS-422 signals. The power used for this converter is derived from the Transmit Data line (pin 2) and the Handshake Control Lines (pins 4, 5, 6, 8, and 20). The converter can derive power from these lines when they are in the Positive or Negative voltage state. This permits the converter to be used in applications without regard to software control of the handshake lines.
If no handshake lines are available and all power must be derived from the Transmit Data line, the converter can drive limited cable lengths. A guide for this condition would be to drive only several hundred feet of transmission line and not to terminate the transmission line with a resistor of less than 1000 Ohms. When more handshake lines are available, longer lengths of cable can be driven. This converter has been tested at 115.2k baud with 1220 meters (4000 feet) of cable.

Model 422CEC, 8-channel RS-232 to RS-422 converter, converts unbalanced RS-232 signals to balanced RS-422 signals. The RS-422 Standard uses a balanced voltage digital interface to allow communications of 90K bits per second on cable lengths of 1200 meters (4000 feet). If this baud rate is exceeded the line length will decrease accordingly. Ten receivers can be connected to any one driver for use in multi-drop systems.

Model 232LPTTL33, 4-channel TTL/CMOS converter, makes easy connections between TTL equipment and RS-232 ports and operates at data rates up to 115.2 kbps. It converts two channels (TX and RX) in each direction (bi-directional) from TTL to RS-232.
Model 232LPTTL33 converts RS-232 to 3.3VDC TTL/CMOS compatible levels. Two channels convert from RS-232 to TTL/CMOS signals and two channels convert from TTL/CMOS signals to RS-232.
The converter supports TD, RD, RTS, and CTS. DB9S female connector on the RS-232 side. DB9P male connector on the TTL/CMOS side. The converter is powered from the RS-232 data and handshake lines, whether the lines are high or low.
Use this converter with almost any micro-controller or programmable logic controller (PLC) that supports TTL.

Model 232LPTTL, 4-channel TTL/CMOS converter, makes easy connections between TTL equipment and RS-232 ports and operates at data rates up to 115.2 kbps. It converts two channels (TX and RX) in each direction (bi-directional) from TTL to RS-232.
Model 232LPTTL converts RS-232 to 5VDC TTL/CMOS competitive levels. Two channels convert from RS-232 to TTL/CMOS signals and two channels convert from TTL/CMOS signals to RS-232.
The converter supports TD, RD, RTS, and CTS. DB9S female connector on the RS-232 side. DB9P male connector on the TTL/CMOS side. The converter is powered from the RS-232 data and handshake lines, whether the lines are high or low.
Use this converter with almost any micro-controller or programmable logic controller (PLC) that supports TTL.

Model FOSCTDRI-PH-MT is a premium heavy industrial serial-to-fiber optic converter. Designed for rugged industrial environments, it has been put through some of the most exacting compliance testing in the industry. Meeting IEC 61850-3 and IEEE 1613 requirements, it is suitable for installation in electrical substations. These specifications are more stringent than NEMA TS1/TS2 requirements for transportation applications. Powerful isolation protects equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third level of protection. An external 10-48 VDC power source is required (not included, sold separately).
Packaged in a rugged IP30 metal case, this converter converts serial signals to multi-mode fiber optic. Bit-wise enabled circuitry automatically detects the data rate without setting a DIP switch.
In addition to direct point-to-point connectivity, operation in multi-drop mode is possible. This enables serial devices to communicate with up to 31 others in a fiber ring. Supporting mixed standards, you can replace other converters and add the EMI / RFI protection inherent to fiber optic communications.
Note: These converters use a proprietary modulated fiber optic signal. Two units are required to extend the data via the fiber optic connection. Any FOSTCDRi-PH-x converter can (only-) connect to another FOSTCDRi-PH-x converter model at the other end of the fiber optic cable.

Model FOSCTDRI-PH-MC is a premium heavy industrial serial-to-fiber optic converter. Designed for rugged industrial environments, it has been put through some of the most exacting compliance testing in the industry. Meeting IEC 61850-3 and IEEE 1613 requirements, it is suitable for installation in electrical substations. These specifications are more stringent than NEMA TS1/TS2 requirements for transportation applications. Powerful isolation protects equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third level of protection. An external 10-48 VDC power source is required (not included, sold separately).
Packaged in a rugged IP30 metal case, this converter converts serial signals to multi-mode fiber optic. Bit-wise enabled circuitry automatically detects the data rate without setting a DIP switch.
In addition to direct point-to-point connectivity, operation in multi-drop mode is possible. This enables serial devices to communicate with up to 31 others in a fiber ring. Supporting mixed standards, you can replace other converters and add the EMI / RFI protection inherent to fiber optic communications.
Note: These converters use a proprietary modulated fiber optic signal. Two units are required to extend the data via the fiber optic connection. Any FOSTCDRi-PH-x converter can (only-) connect to another FOSTCDRi-PH-x converter model at the other end of the fiber optic cable.

Model 232CLDR is a DIN rail mountable RS-232 to current loop converter. It is wide temperature rated and UL Recognized for industrial applications. It has one optically isolated 20 mA Transmit loop and one optically isolated Receive loop. Each loop can be set to either "Active" or "Passive." When set to "Active", an isolated 20 mA current is supplied for each loop (Transmit and Receive). A 10 to 30 VDC power supply (required, not included, sold separately) provides power to the converter and both current loops.
The 232CLDR communicates at baud rates up to 19.2 kbps and can extend communications up to 600 meters (2,000 ft.). 2,000V optical isolation protects equipment from damaging ground loops and surges. Two LED’s indicate data flow. Connections are made on terminal blocks.

Model BB-232CL9R is a port-powered RS-232 to current loop converter. No external power required for passive loop installations, but a power supply is required to generate an active loop (power supply sold separately).

Model FOSCTDRI-PH-SC is a premium heavy industrial serial-to-fiber optic converter. Designed for rugged industrial environments, it has been put through some of the most exacting compliance testing in the industry. Meeting IEC 61850-3 and IEEE 1613 requirements, it is suitable for installation in electrical substations. These specifications are more stringent than NEMA TS1/TS2 requirements for transportation applications. Powerful isolation protects equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third level of protection. An external 10-48 VDC power source is required (not included, sold separately).
Packaged in a rugged IP30 metal case, this converter converts serial signals to single-mode fiber optic. Bit-wise enabled circuitry automatically detects the data rate without setting a DIP switch.
In addition to direct point-to-point connectivity, operation in multi-drop mode is possible. This enables serial devices to communicate with up to 31 others in a fiber ring. Supporting mixed standards, you can replace other converters and add the EMI / RFI protection inherent to fiber optic communications.
Note: These converters use a proprietary modulated fiber optic signal. Two units are required to extend the data via the fiber optic connection. Any FOSTCDRi-PH-x converter can (only-) connect to another FOSTCDRi-PH-x converter model at the other end of the fiber optic cable.

Model FOSTCDR, serial to multimode fiber optic converter, is suitable for standard industrial installations. It extend data communications up to 4 km (2.5 mi) and provides two-way optical isolation on the input and output lines.
Model FOSTCDR provides the most versatile connection possible between any asynchronous full- or half-duplex serial equipment. In addition to direct point-to-point connectivity, it is capable operating in multi-drop mode. This allows one serial device to communicate with up to 31 other devices around a fiber optic ring. Since the converter supports mixed serial standards, you can replace other converters and isolators and add the EMI/RFI immunity inherent to fiber optic communications.
An Automatic Send Data Control circuit controls the RS-422/485 driver chip, eliminating the requirement for special software. Easy to install and configure, it has an 8-position DIP switch to set up RS-422/485 parameters and terminal blocks to connect serial signals and power. In RS-232 mode, it supports Transmit and Receive data. Handshaking signals are not passed through.
A 10-30 VDC external power source is required (power supply is not included, sold separately).

Model SCP311T-DFTB3 serial converter is compact and rugged, designed and tested to meet heavy industrial EMC standards. The RS-232 signal is connected through a female DB9 connector. The RS-422/485 (2-wire and 4-wire) signal is connected through a removable terminal block, making wiring easy. Power is connected through a two-position, removable terminal block. A 10-30VDC external power source is required (not included, sold separately). Bit-wise enabled circuitry automatically detects the character time-out eliminating the need to set DIP switches for the baud rate.Model SCP311T-DFTB3 offers 2 kV isolation plus a -40 to 80°C wide operating temperature. This rugged model is an excellent investment for protecting your expensive control equipment.

Model BB-485DRCI-PH is our premium heavy industrial RS-232 to RS- 422/485 isolated converter. Designed for rugged industrial environments, it has been put through some of the most exacting compliance tests in the industry. Meeting the requirements of IEC 61850-3 and IEEE 1613, it is suitable for installation in electrical substations. These specifications are more stringent than the NEMA TS1/TS2 requirements for transportation applications. Powerful isolation on both data ports protects your equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third degree of protection. An external power supply is required (not included, sold separately).
Packaged in a rugged IP30 metal case, it converts unbalanced, full or half-duplex RS-232 signals to balanced RS-422/485 signals. Featuring Automatic Send Data Control circuitry, it does not require special software control of handshake signals in RS-485 mode.

Model FOSTCDRI is a premium industrial serial to multi-mode fiber optic converter. Its rugged design is UL approved and certified for Class 1/Division 2 industrial environments. It extends data communications up to 4 km (2.5 miles). It provides three-way optical isolation on the input, output and power lines.
In addition to direct point-to-point connectivity, it is capable of operating in a multi-drop mode. This allows one serial device to communicate with up to 31 other devices around a fiber ring. Since it supports mixed standards, you can replace other converters and isolators and add the EMI / RFI protection inherent to fiber optic communications.
In RS-232 mode, the converter supports Transmit and Receive data. Handshaking signals are not passed through. An Automatic Send Data Control circuit controls the RS-422/485 driver chip, eliminating the requirement for external software.
Easy to install and configure, it has a 12-position DIP switch on the bottom to configure RS-422/485 parameters. Serial data and power cables connect to removable terminal blocks. ST connectors are used for the fiber.
A 10-30 VDC external power source is required (power supply not included, sold separately

This port-powered, two channel converter allows your computer to communicate longer distances by converting TD and RD RS-232 lines to RS-485 signals. RS-485 also provides multi-drop capability.
Model 485SD9TB features Automatic Send Data Control which enables the driver when data is present on the RS-232 side. Control of the driver is automatic at speeds up to 115.2 kbps.
The converter is powered from the RS-232 data and handshake lines whether the lines are high or low. No handshake line change is necessary to control the data lines. The RS-485 driver is enabled with each bit of data. The RS-485 receiver is disabled when the driver is enabled and is enabled when the driver is disabled.
This converter is suitable for field service, where a power supply would add clutter, or anywhere you need compact, easy-to-use, economically priced serial conversion.
Model 485SD9TB can be optionally powered by an external 12 VDC power supply.

This port-powered, two channel converter allows your computer to communicate longer distances by converting TD and RD RS-232 lines to RS-485 signals. RS-485 also provides multi-drop capability.
Model 485SD9R features Automatic Send Data Control which enables the driver when data is present on the RS-232 side. Control of the driver is automatic at speeds up to 115.2 kbps.
The converter is powered from the RS-232 data and handshake lines whether the lines are high or low. No handshake line change is necessary to control the data lines. The RS-485 driver is enabled with each bit of data. The RS-485 receiver is disabled when the driver is enabled and is enabled when the driver is disabled.
This converter is suitable for field service, where a power supply would add clutter, or anywhere you need compact, easy-to-use, economically priced serial conversion.

Model 485DRCi industrial-grade isolated serial converter changes RS-232 signals to RS-422 for increased range, or to RS-485 for increased range plus multi-drop capability.
Designed for rugged industrial use, the 485DRCi is UL approved and certified for operation in Class 1/Division 2 environments and also offers 2,000V 3-way optical isolation on input, output, and power lines. In addition to optical isolation, the unit has surge suppression on the RS-422/485 lines.
This DIN rail mountable converter optically isolates and converts unbalanced, full or half-duplex, RS-232 signals to balanced RS-422/485 signals at baud rates up to 115.2 kbps. Configuration is made via a 12-position DIP switch on the bottom of the converter.
Featuring Automatic Send Data Control circuitry, the converter does not require special software control of handshake signals in RS-485 mode. Removable terminal blocks for power and RS-422/485 signals make wiring easy. It is powered by a supply voltage of 10 to 48 VDC which is isolated from all data and signal ground lines. An external power supply is required (not included, sold separately).
The BB-485DRCi may be suitable for use in Modbus and Allen-Bradley® DH-485 applications.

With our data isolation and data repeaters, you can protect your electronics from power spikes, lightning surges, dangerous ground loops, and accidental high voltage shorts, while increasing your data line range.

Most industrial computer systems come with standard RS-232 serial ports. Though widely accepted, RS-232 has limited transmission speed, range, and networking capabilities. The RS-422 and RS-485 standards overcome these limitations by using differential voltage lines for data and control signals. The ADAM-4520/4522 converter lets you take advantage of RS-422 and RS-485 on systems originally equipped with RS-232. It transparently converts RS-232 signals into isolated RS-422 or RS-485 signals. You do not need to change your PC's hardware or your software. The ADAM-4510S repeater simply amplifies, or boosts, existing RS-422/485 signals to enable them to cover longer distances. It extends the communication distance by 4000 ft. (1200 m) or increases the maximum number of connected nodes by 32.

The ADAM-4510I (RS-422/485 repeater) is designed more rugged than previous models which have wider operating and storage temperatures, can accept a wider power input, and have excellent anti-noise design. Moreover, it provides signal isolation (3,000VDC) protection and power surge (50V) protection. These industrial-grade features ensure robust and reliable operation in harsh environment applications.

The ADAM-4510 repeaters simply amplify, or boost, existing RS-485 signals to enable them to cover longer distances. They extend the communication distance by 4000 ft (1200 m) or extend the number of connected nodes by 32.

Model 9SPOP2 is a port-powered, two-channel isolator with a 2,500 Volts protection level. It optically isolates both the RS-232 Transmit Data and Receive Data lines and RS-232 equipment from lightning surges, accidental high voltage shorts, and ground loops. RS-232 data signals TD and RD are supported at up to 115.2 kbps.

Model 9POP4 isolates and protects RS-232 equipment from lightning surges, accidental high voltage shorts, and ground loops. RS-232 data signals TD, RD, RTS, and CTS are supported at up to 230.4 kbps. Isolation circuits are 2.5 kV rated and protects valuable equipment while maintaining maximum uptime.
Each side of the isolator receives power from a single 12 VDC power supply to maintain the isolation. This powering configuration allows the device to be used in a system with only one power supply, regardless of the power provided by the RS-232 ports.
The isolator uses DB9 male and DB9 female connectors. The female connector is wired as a DCE and should be connected to a DTE port. The male connector is a DTE and should be connected to a DCE port. If you are connecting a DTE to a DTE or a DCE to a DCE, you will need a null modem adapter.
Recommended, tested and certified power supply is available from Advantech B B SmartWorx. (Note: using any other power supply may bypass or degrade the isolation barrier.)

The 232LB9R is a 9-pin RS-232 repeater that re-transmits all 8 signals and carries the ground line through. Many computers, laptops and some desktops ship with low-power versions of RS-232 ports that are unable to drive port-powered devices or full-length RS-232 cabling. The 232LB9R can amplify these weak signals up to the RS-232 Standard for uses such as running port powered devices. It is also ideal for extending full-powered RS-232 cable runs beyond the typical 15 to 30 meters (50 to 100 feet) distance. An external power supply is required (not included, sold separately).

Model 485OP is an optically isolated RS-422/485 signal repeater. In addition to 2KV isolation on the data lines, it can be used to extend RS-422/485 circuits an additional 1.2 km (4,000 ft.), thereby doubling the range. An added benefit is the ability to add another 32 nodes to an RS-485 network and join 2 and 4 wire systems.
The compact design fits almost anywhere. Terminal blocks allow easy installation. Wiring schematic on the label eliminates guesswork. A 12 VDC power supply is required, and included, with blades for USA, EU, UK, AU, UP & CN.

Model BB-485OPDR is a 2kV optically isolated RS-422/485 line repeater that isolates a piece of equipment from the rest of the network. 600W surge suppression ensures that connected equipment is protected even in the harshest of environments.
As a repeater, it extends the distance of an existing network an additional 1.2 km (4000 ft) and expands it beyond the typical 32 node limitation. Data signals and power inputs connect to the terminal block. Supports 2-wire RS-485, 4-wire RS-485 and RS-422. Automatic Send Data Control means no software drivers required to install or manage.
Model BB-485OPDR operates on externally sourced 10 to 30 VDC power (not included, sold separately). The DIN rail mount enclosure is designed to fit easily on a standard 35mm rail.

Model BB-485OPDR-HS is a high speed, optically isolated RS-422/485 repeater that supports data rates up to 1.5 Mbps, making it suitable for use in fieldbus systems such as Profibus.
Isolation - Model BB-485OPDR-HS provides 2 kV digital isolation with 8 kV air ESD protection and 600 W transient voltage suppression on the data lines.
Range Extension - Model BB-485OPDR-HS can be used to extend the range of a network up to 1.2 km (4000 ft), depending on data rates, and to add additional nodes. 2-wire RS-485, 4-wire RS-485 and RS-422 are supported. Data signals and the power inputs connect to built-in terminal blocks.
Power - The repeater operates on externally sourced 10 to 30 VDC power (power supply is required, not included, sold separately).
Enclosure - The enclosure has a DIN rail mount enclosure that is designed to easily fit on standard 35mm DIN rail.

Model BB-485OPDRI-PH is a premium, heavy industrial RS-422/485 isolated repeater. Designed for rugged industrial environments, it meets some of the most exacting compliance tests in the industry. IEC 61850-3 and IEEE 1613 rated, it is suitable for installation in electrical substations. (These specifications are more stringent than NEMA TS1/TS2 requirements for transportation applications).
Powerful isolation on both data ports protects your equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third degree of protection.
Packaged in a rugged IP30 metal case, it extends full or half-duplex RS-422/485 signals an additional 4000 feet and allows you to add another 32 nodes to your network. Bit-wise enabled circuitry automatically detects the data rate without setting a DIP switch.
10-48 VDC power is externally sourced (power supply required, not included, sold separately).

The BB-232OPDRI-PH is a premium heavy industrial RS-232 isolated repeater. Designed for rugged industrial environments, it meets some of the most exacting compliance tests in the industry including IEC 61850-3 and IEEE 1613 making it suitable for installation in electrical substations. These specifications are more stringent than the NEMA TS1/TS2 requirements for transportation applications.
Powerful isolation on both data ports protects your equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third degree of protection.
Packaged in a rugged IP30 metal case, this repeater operates in wide temperature extremes. The panel mount form factor with DIN Rail mount option makes it easy to integrate into your control panel or other industrial equipment.
Installation and configuration is easy. Data is connected with a DB9 female connector (DCE) and a DB9 male connector (DTE).
Power is connected through terminal block that accepts 10 to 48 VDC from any external source. (Power supply required, not included, sold separately.)

The 232OPDR is a DIN Rail mountable RS-232 optical isolator and repeater. It provides 2000 V Isolation for four RS-232 signal lines, two in each direction. The isolator has four LED’s to show data flow and one LED to indicate power. Connections are made to a terminal block. The isolation provides protection for computer equipment from ground loops and induced currents caused by lightning or heavy electrical loads. It also functions as a repeater to extend RS-232 signals another 50 feet. The 232OPDR can support two data pairs or one data pair plus control signals in both directions.
10-30 VDC power input via terminal block. An external power supply is required, not included, sold separately.

Model BB-485OPDRI isolated RS-422/485 repeater is designed for rugged industrial environments. It is UL listed and certified for use in Class 1/Division 2 locations. Powerful optical isolation on both data ports protects your equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third degree of protection.
Packaged in a rugged ABS plastic case, this repeater operates in wide temperature extremes. With a 35mm DIN rail mounting bracket, it easily integrates into control panels or other industrial equipment.
Installation and configuration is easy with DIP switches to set up baud rate and serial communications mode. Removable terminal blocks make wiring a snap. Power is connected through separate terminal block that accepts 10 to 48 VDC from any external source (power supply required, not included, sold separately).
Model BB-485OPDRi On DH-485 Network In Place of Allen-Bradley(R) 1747-AIC Link Coupler:
Model BB-485OPDRi RS-422/485 industrial optically isolated repeater, often used in Modbus applications, can also be configured for use in the DH-485 environment as a limited replacement for the 1747-AIC.

Model 232OPDRI is our premium Industrial RS-232 Isolated Repeater. Designed for rugged industrial environments, it is UL listed and certified for use in Class 1 Division 2 locations. Powerful optical isolation on both data ports protects your equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third degree of protection.
Packaged in a rugged plastic case, the 232OPDRI operates in wide temperature extremes. With a 35mm DIN rail mounting bracket, it is easy to integrate into a control panel or other industrial equipment.
Installation and configuration is easy. Data is connected with a DB9 female connector (DCE) and a DB9 male connector (DTE). Power is connected through a terminal block that accepts 10 to 48 VDC from external power source. (Power supply required, not included, sold separately.)

Model 232SPHI4 isolates and protects RS-232 equipment from lightning surges, accidental high voltage shorts and ground loops. The isolator supports RS-232 data signals up to 115.2 kbps as well as RTS and CTS handshake lines. Model 232SPHI4 provides 4000 Volts isolation between sides — twice the rating of most isolators. DTE device connections are made through a DB-25 female. DCE device connections are made through a DB-25 male.
The two sides of the isolator are powered independently to maintain isolation. Both sides can draw power from the RS-232 data and handshake lines, eliminating external powering requirements in nearly all systems.
If the isolator is to be used with low power ports or when no handshake lines are available, external power can be supplied to either side or both (power supply not included, sold separately). This versatile powering configuration minimizes the number of supplies required by the overall system.

Lightning arrestors protect sensitive radio equipment from high-energy transients during lightning strikes – preventing costly repairs and/or equipment replacement.
These lightning arrestors suppress surges to less than 45 Volts in ~100 ns. They are designed with a rugged housing, high quality plated brass "N" connectors and allow bulkhead mounting and connector pass-through. In the presence of energy and voltage surges, a gas discharge tube changes from an open-circuit to a short-circuit, providing surges with a direct path to Ground.

Lightning arrestors protect sensitive radio equipment from high-energy transients during lightning strikes – preventing costly repairs and/or equipment replacement.
These lightning arrestors suppress surges to less than 45 Volts in ~100 ns. They are designed with a rugged housing, high quality plated brass "N" connectors and allow bulkhead mounting and connector pass-through. In the presence of energy and voltage surges, a gas discharge tube changes from an open-circuit to a short-circuit, providing surges with a direct path to Ground.

Model BB-CANOP increases the node capacity of CAN (Control Area Network) systems while protecting CAN networks from component destroying surges and transients. The BB-CANOP provides 2,000 VDC of optical isolation to separate and protect critical segments of the system from the rest of the CAN Network. It is protocol independent, allowing it to work with different CAN protocols and frame lengths.
According to the CAN specification, the CAN network must be terminated at both ends. Networks that are not properly terminated may experience data errors or miss data completely. The BB-CANOP creates two new ends to the CAN network. Space is provided on the board for a termination resistor on each side, R6 and R8 (120 Ohm resistor recommended). If the BB-CANOP is not at the end of the network, it should not be terminated.
Model BB-CANOP is bit-wise enable, allowing it to automatically adjust for different baud rates. Bit-wise enable only enables the driver on every low bit received. It also disables the driver on the receive side for the low bit plus a maximum of 2µ seconds. This prevents data from echoing back from the BB-CANOP, but allows the nodes to respond back.
A 10-30 VDC external power source is required (not included, sold separately).

Single stage surge protectors offer a high degree of protection with Transient Voltage Suppressors (TVS) for each protected line.
Model 485FPP has 600W Transient Voltage Suppressors to clamp voltages without adversely affecting normal RS-422/485 data. Fast-acting 125 mA PCB fuses to protect RS-422 and RS-485 circuits against transient voltages that are too long or too large for normal suppression.
The 485FPP has 4 wires and terminal blocks for easy installation inline between the data cables – as close as possible to the serial port. Once a fuse is blown, the unit should be disposed and replaced.

Model 232SP9 protects RS-232 ports from damage caused by large voltage peaks from lightning and other power problems. The surge protector uses 600W Transient Voltage Suppressors to protect all 9 pins. It has one DB9 male and one DB9 female connector with all 9 pins passing straight through. The TVSs are connected between the ground screw and pins 1, 2, 3, 4, 5, 6, 7, 8 and 9. The 232SP9 will suppress any voltage levels above 12 Volts without affecting the normal RS-232 data.
The 232SP9 is placed inline, between the data cable and the RS-232 port, as close to the protected port as possible. The ground screw must be connected to earth ground. A minimum of 12 AWG copper wire is recommended. Model CU15B is 1.5 x 0.016 in (38 x 0.25 mm) copper cut to length for ground connections that are longer than a few feet (one meter). If this device is not properly grounded it will not protect RS-232 lines.

Model 232HESP is a three-stage surge protector that protects against lightning strikes, power surges and other types of voltage disturbances with three stages of protection for each line: a gas discharge tube followed by a series resistor and finally a Transient Voltage Suppresser (TVS).
The surge protector is housed in a tough metal, panel mount case with a protected signal ground connection and dedicated chassis ground lug.In order to work properly, it is important to have a good connection between the #10 screws and a solid earth ground. Two terminal posts and two metal mounting brackets provide a good ground connection.

Model 485HESP is a three-stage surge protector that protects against lightning strikes, power surges and other types of voltage disturbances with three stages of protection for each line: a gas discharge tube followed by a series resistor and finally a Transient Voltage Suppresser (TVS).
The surge protector is housed in a tough metal, panel mount case with a protected signal ground connection and dedicated chassis ground lug.In order to work properly, it is important to have a good connection between the #10 screws and a solid earth ground. Two terminal posts and two metal mounting brackets provide a good ground connection.

Model 422HESP is a three-stage surge protector that protects against lightning strikes, power surges and other types of voltage disturbances with three stages of protection for each line: a gas discharge tube followed by a series resistor and finally a Transient Voltage Suppresser (TVS).
The surge protector is housed in a tough metal, panel mount case with a protected signal ground connection and dedicated chassis ground lug.In order to work properly, it is important to have a good connection between the #10 screws and a solid earth ground. Two terminal posts and two metal mounting brackets provide a good ground connection.

Model BB-HESP4DR meets IEEE 1000-4-5: 1995 and IEEE C62.41-1991 recognized standards for premium surge protectors. It protects against lightning strikes, power surges, and other types of voltage disturbances with three stages of protection for each supported line: a gas discharge tube followed by a series resistor and finally a Transient Voltage Suppresser (TVS). Five RS-422/485 signals on terminal blocks are supported with a clamping voltage of 6.8 Volts.
The BB-HESP4DR is housed in a sturdy DIN rail mount case with a #10 grounding screw. In order to work properly, it is important to have a good connection between the #10 screw and a solid earth ground.